Hi Xin, url: https://github.com/0day-ci/linux/commits/Xin-Ji/Add-initial-support-for-s... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5925fa68fe8244651b3f78a88c4af99190a88f0d config: mips-randconfig-m031-20200917 (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; smatch warnings: drivers/gpu/drm/bridge/analogix/anx7625.c:1289 anx7625_get_edid() warn: possible memory leak of 'edid' # https://github.com/0day-ci/linux/commit/667ee517c70d2bedafe5bfa0dc5f13fc6... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Xin-Ji/Add-initial-support-for-slimport-anx7625/20200917-163238 git checkout 667ee517c70d2bedafe5bfa0dc5f13fc60d5133d vim +/edid +1289 drivers/gpu/drm/bridge/analogix/anx7625.c 667ee517c70d2be Xin Ji 2020-09-17 1264 static struct edid *anx7625_get_edid(struct anx7625_data *ctx) 667ee517c70d2be Xin Ji 2020-09-17 1265 { 667ee517c70d2be Xin Ji 2020-09-17 1266 struct device *dev = &ctx->client->dev; 667ee517c70d2be Xin Ji 2020-09-17 1267 struct s_edid_data *p_edid = &ctx->slimport_edid_p; 667ee517c70d2be Xin Ji 2020-09-17 1268 int edid_num; 667ee517c70d2be Xin Ji 2020-09-17 1269 u8 *edid; 667ee517c70d2be Xin Ji 2020-09-17 1270 667ee517c70d2be Xin Ji 2020-09-17 1271 edid = kmalloc(FOUR_BLOCK_SIZE, GFP_KERNEL); 667ee517c70d2be Xin Ji 2020-09-17 1272 if (!edid) { 667ee517c70d2be Xin Ji 2020-09-17 1273 DRM_DEV_ERROR(dev, "Fail to allocate buffer\n"); 667ee517c70d2be Xin Ji 2020-09-17 1274 return NULL; 667ee517c70d2be Xin Ji 2020-09-17 1275 } 667ee517c70d2be Xin Ji 2020-09-17 1276 667ee517c70d2be Xin Ji 2020-09-17 1277 if (ctx->slimport_edid_p.edid_block_num > 0) { 667ee517c70d2be Xin Ji 2020-09-17 1278 memcpy(edid, ctx->slimport_edid_p.edid_raw_data, 667ee517c70d2be Xin Ji 2020-09-17 1279 FOUR_BLOCK_SIZE); 667ee517c70d2be Xin Ji 2020-09-17 1280 return (struct edid *)edid; 667ee517c70d2be Xin Ji 2020-09-17 1281 } 667ee517c70d2be Xin Ji 2020-09-17 1282 667ee517c70d2be Xin Ji 2020-09-17 1283 anx7625_low_power_mode_check(ctx, 1); 667ee517c70d2be Xin Ji 2020-09-17 1284 edid_num = sp_tx_edid_read(ctx, p_edid->edid_raw_data); 667ee517c70d2be Xin Ji 2020-09-17 1285 anx7625_low_power_mode_check(ctx, 0); 667ee517c70d2be Xin Ji 2020-09-17 1286 667ee517c70d2be Xin Ji 2020-09-17 1287 if (edid_num < 1) { 667ee517c70d2be Xin Ji 2020-09-17 1288 DRM_DEV_ERROR(dev, "Fail to read EDID: %d\n", edid_num); 667ee517c70d2be Xin Ji 2020-09-17 @1289 return NULL; kfree(edid); before returning. 667ee517c70d2be Xin Ji 2020-09-17 1290 } 667ee517c70d2be Xin Ji 2020-09-17 1291 667ee517c70d2be Xin Ji 2020-09-17 1292 p_edid->edid_block_num = edid_num; 667ee517c70d2be Xin Ji 2020-09-17 1293 667ee517c70d2be Xin Ji 2020-09-17 1294 memcpy(edid, ctx->slimport_edid_p.edid_raw_data, FOUR_BLOCK_SIZE); 667ee517c70d2be Xin Ji 2020-09-17 1295 return (struct edid *)edid; 667ee517c70d2be Xin Ji 2020-09-17 1296 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org